I have heard of AFB's and WCFB's but a AVS???? Well i happen to have one, and will be in the process of putting a kit in it, here shortly. Does anybody know ANYTHING about them (cfm, application, etc..). All i know this one is from a 66-67 chevy 327, but thats about it. It looks the same as an AFB. Are they rare? Heres the number off of it if that helps, front pad 4028S and below that L5. Thanks for all your help.